package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void addEmployee(EmployeeDTO dto) {
        //把dto里面的属性值全部复制到Employee这个对象中
        Employee employee = new Employee();
        //对象的属性拷贝
        BeanUtils.copyProperties(dto, employee);
        //补全employee对象剩余的属性值
        //设置默认密文密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employee.setStatus(StatusConstant.ENABLE);
        //创建时间
        /*employee.setCreateTime(LocalDateTime.now());
        //修改时间
        employee.setUpdateTime(LocalDateTime.now());
        //创建人
        *//*
        当前这个创建人的id和修改人的id,应该是当前登录人的id
        我们目前在拦截器里已经解析出来了当前登录人的id,现在的问题是
        该如何拿到拦截器中的id
        * *//*
        employee.setCreateUser(BaseContext.getCurrentId());
        //修改人
        employee.setUpdateUser(BaseContext.getCurrentId());*/

        employeeMapper.addEmployee(employee);
    }

    @Override
    public PageResult page(EmployeePageQueryDTO dto) {
        //1.开启分页插件的功能 起始索引=(当前页码 - 1)*每页显示记录数
        PageHelper.startPage(dto.getPage(),dto.getPageSize());
        //2.编写sql语句
        Page<Employee> page=employeeMapper.page(dto);
        long total = page.getTotal();
        List<Employee> employeeList = page.getResult();

        return new PageResult(total,employeeList);
    }

    @Override
    public void StartORStopStatus(Integer status, Integer id) {
        //employeeMapper.startOrStop( status, id);
        Employee employee = Employee.builder()
                .status(status)
                .id(id.longValue())
                /*.updateTime(LocalDateTime.now())
                .updateUser(BaseContext.getCurrentId())*/
                .build();
        employeeMapper.updateEmployee(employee);
    }

    @Override
    public Employee getEmployeeById(Integer id) {
        Employee employee=employeeMapper.getEmployeeById(id);
        return employee;
    }

    @Override
    public void updateEmployee(EmployeeDTO dto) {
        Employee employee=new Employee();
        BeanUtils.copyProperties(dto,employee);
        /*employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        employeeMapper.updateEmployee(employee);
    }

}
